USD270935SExpiredUtility

Expansion coupling for plastic pipe

73
Individually held — no corporate assignee on recordPriority: Jan 26, 1981Filed: Jan 26, 1981Granted: Oct 11, 1983
Est. expiryJan 26, 2001(expired)· nominal 20-yr term from priority
Inventors:Duane D. Logsdon
73
PatentIndex Score
12
Cited by
11
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an expansion coupling for plastic pipe, substantially as shown and described.

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